| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Registration plate issues | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Handlebar deformed |2.1.1b| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Offside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Outer Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Outer Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Floor brake test indicates a sticking brake Pivots partially seized and brake drum pivot seized |3.3.C2c| | 1 |
| Handlebar retaining device missing |2.2.1 |b| |i|| | 1 |
| Handlebar retaining device loose |2.2.1 |b| |i|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Stop lamp with a multiple light source more than 1/2 not functioning |4.3.1 |a| |ii|| | 1 |
| Front Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Rear Riders seat insecure |6.2.1a| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies brake |1.3.1a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component both fork stanchions |2.3.4| | 1 |
| Nearside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Throttle operating incorrectly (6.2.1f) | 1 |
| Stop lamp not working from either source (4.3.1 (a) (ii)) | 1 |
| Offside Rear Suspension component pin or bush excessively worn Shock (5.3.4 (a) (i)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear Brake component inadequately mounted brake arm (1.1.21 (c)) | 1 |
| Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Horn sound not in accordance with requirements Can???t be heard by other road users (7.7 (c)) | 1 |
| Offside Rear Upper Suspension component pin or bush excessively worn Shock (5.3.4 (a) (i)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Throttle operating incorrectly not closing with steering turned to left side (6.2.7 (a) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Upper Suspension component pin or bush excessively worn Shock bush (5.3.4 (a) (i)) | 1 |
| Registration plate lamp issues | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced rear mudguard bracket (6.1.1 (b) (ii)) | 1 |
| Rear reflector missing covered by l plate (4.8.2 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| All position lamps not working side light (4.2.1 (a)) | 1 |